CVE-2019-18609

Name: CVE-2019-18609
Creator: NVD / NIST
Published: 2019-12-01T22:15:10.897+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 3.32%

Last modified Jun 17, 2026

CVE-2019-18609 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. An issue was discovered in amqp_handle_input in amqp_connection.c in rabbitmq-c 0.9.0. There is an integer overflow that leads to heap memory corruption in the handling of CONNECTION_STATE_HEADER. EPSS estimates a 3.32% chance of exploitation in the next 30 days.

Description

An issue was discovered in amqp_handle_input in amqp_connection.c in rabbitmq-c 0.9.0. There is an integer overflow that leads to heap memory corruption in the handling of CONNECTION_STATE_HEADER. A rogue server could return a malicious frame header that leads to a smaller target_size value than needed. This condition is then carried on to a memcpy function that copies too much data into a heap buffer.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

3.32%

87.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Rabbitmq-C Project	Rabbitmq-C	< 0.10.0
Fedoraproject	Fedora	30
Fedoraproject	Fedora	31
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	19.04
Canonical	Ubuntu Linux	19.10
Debian	Debian Linux	8.0

References

https://github.com/alanxz/rabbitmq-c/blob/master/ChangeLog.mdThird Party Advisory
https://github.com/alanxz/rabbitmq-c/commit/fc85be7123050b91b054e45b91c78d3241a5047aPatch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/12/msg00004.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WA7CPNVYMF6OQNIYNLWUY6U2GTKFOKH3/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XQER6XTKYMHNQR7QTHW7DJAH645WQROU/
https://news.ycombinator.com/item?id=21681976Issue Tracking, Third Party Advisory
https://security.gentoo.org/glsa/202003-07Third Party Advisory
https://usn.ubuntu.com/4214-1/Third Party Advisory
https://usn.ubuntu.com/4214-2/Third Party Advisory
https://github.com/alanxz/rabbitmq-c/blob/master/ChangeLog.mdThird Party Advisory
https://github.com/alanxz/rabbitmq-c/commit/fc85be7123050b91b054e45b91c78d3241a5047aPatch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/12/msg00004.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WA7CPNVYMF6OQNIYNLWUY6U2GTKFOKH3/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XQER6XTKYMHNQR7QTHW7DJAH645WQROU/
https://news.ycombinator.com/item?id=21681976Issue Tracking, Third Party Advisory
https://security.gentoo.org/glsa/202003-07Third Party Advisory
https://usn.ubuntu.com/4214-1/Third Party Advisory
https://usn.ubuntu.com/4214-2/Third Party Advisory

Timeline

Published: Dec 1, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-18609?

How severe is CVE-2019-18609?

CVE-2019-18609 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 3.32% probability of exploitation in the next 30 days.

How do I fix CVE-2019-18609?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-18609?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST